NUOVA PRECISIONE ER20 CUSCINETTO A SFERA PINZA DADO PORTAUTENSILI DADO PINZA
Bearing Collet Nut holds all ER20 collets. Our ER20-B Wrench works on this collet nut. Internal cam removes collet when unscrewed. This nut is a bearing nut and has internal ball bearings. Precision ground ID thread and taper.